RU1801671C - Die set for blanking and multistage drawing - Google Patents

Abstract

Usage: refers to the processing of metals by pressure, can be used to obtain deep cylindrical products with a bottom from a sheet billet and allows you to expand technological capabilities by increasing the utilization of metal and at the same time increase productivity. I SUMMARY OF THE INVENTION: the stamp comprises a bottom plate 7c of a punch 10 and an exhaust 2. with matrices 11, 1.2 in the matrix holder 8, the upper plate 1 with a central exhaust punch 2 with a drive collar 6, spring-loaded on the columns 22, the intermediate plate 21 with the punch 31 and the exhaust sections 34, 33, pivoting levers 27 mounted on the columns 22 and interacting with the intermediate plate 21. B. the stamp has at least one main and one additional unit for cutting and drawing (2,31,33,34,10,11,15.16), the intermediate plate 21 is located on four columns 22, which are located oriented to each other outside the zone Four pivoting levers 27 interacting with the collars 39 of the drive rods 38 are located at the tool location. The latter are fixed to the upper plate 1 of the stamp and pass through the corresponding holes in the middle of the first plate 21. 1 zpf-2, 2 ill.

Description

The invention relates to the field of metal forming and can be used to produce cylindrical, thin-walled, deep glass-type products with a smooth, embossed or with 5-hole openings made of plastic materials that do not require intermediate annealing during multi-transition drawing from a workpiece to in the form of a strip or tape.

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The purpose of the invention is the expansion of the technological capabilities of the stamp by increasing the utilization of metal and labor productivity with a single feed of tape or strip of 15 stamps.

Figure 1 shows a fragment of a General view of the stamp with a longitudinal section in the lower. mute position of the slider press; Fig. 2 is a top view of the lower die plate with the intermediate plate 20 mounted, the upper plate removed and the central exhaust punches and drive rods stopped below. .

The stamp contains the top plate 1 with 2.5 central mounted on it.

exhaust punches 2 with a puncheon holder 3 and nuts 4. Each central exhaust puncheon 2 consists of an exhaust part 5 and a drive collar 6. On .30 the bottom plate of the die 7 is a matrix holder 8, in which cavity 9 is located complexes of die-cutting tools: 10 - die-cutting matrix; 11 is a second hood matrix with a channel 12 for removing a region 13 after trimming the article 14; 15 - matrix of the last stretch; 16 - puller. The tool kit in the matrix holder 8 is fixedly fixed by a cover 17 with an exit hole for a region 40 13, the air blown of which is carried out through the hole 18 in the matrix holder 8. A puller 19 and guides 20 are installed on the matrix holder 8 for feeding the tape or strip into the die working area. ; 45 On the bottom plate 7 of the stamp, an intermediate plate 21 is installed on the columns 22 with restriction by nuts 23, supported by springs 24 from below. The columns 22 are in contact with the intermediate plate 21 using the guide sleeves 25. The top of the column 22 is made in the form of an eye 26, on which pivotally pivots the pivot arm 27 with a pin 28. The other end of the pivot arm 27 is provided with a roller 29, 55 resting on a support ring 30 made in the form of a half cylinder and recessed flush into the intermediate plate 21 to compensate for the uneven application of forces.

Bottom to the intermediate plate 21 is mounted a punch consisting of a stepped inside the housing 31 and the punching sleeve 32. Inside the punching case 31 there are exhaust sections .33 and 34, at the ends of which are expandable sleeves 35 and 36. The penultimate stretching section 34 has a drive collar 37. Drive rods 38 with collars 39 are attached to the upper plate 1, which cooperate with the rollers 29 of the swing arms 27. In the intermediate plate 21 there is an opening 40 for the passage of the drive rods 38 (Fig. 2). Here, schematically shows the pre-stamping unit 41 of the bottom of the product for 3-row cutting,

The stamp works as follows. When the slide moves downward, the collars 39 of the drive rods 38 act on the pivoting levers 27, which give the so-called intermediate plate 21 through the support rings 3.0. In this case, the intermediate plate 21 moves down together with the punch (31, 32), cutting the workpiece and laying it on the exhaust die 10 and pressing it. In this case, the pivoting levers 27 rotate and slide out from under the collar 39. of the drive rod 38 and the movement of the intermediate plate 21 is stopped, being fixed in the final position. Then, the drive collar 33 of the central exhaust punch 2 acts on the expanding ring 36, which is in the upper position and it begins to move the exhaust section 34, because its bur-, volume 37 acts on the expanding ring 35 and through it on the exhaust section 3, which produces the first extraction of the cap. After the expanding ring extends beyond the lower protrusion of the punch body 31 and under the action of two forces from the collar 37 of the exhaust section 34 and the spring of the section 33, the expanding ring 35 expands, expands its ring spring, and the movement of the exhaust section 33 is stopped. while the collar 37 passes by the expanding ring 35. Now comes into effect. stretching section 34, a second stretching of the semi-finished product is carried out. After the expanding ring 36 enters the groove of the punch housing 31, it also expands. The extraction of section 34 is stopped and then the third exhaust is produced by the central exhaust punch 2, pulling the workpiece through the die 15 and moving it beyond the working edges of the puller 16. When the central exhaust punch 2 is pulled up, the component 14 is lifted upward to leave the part 14 in the puller 16 and the aforementioned collars of the punch and the exhaust section, the passage past the expansion rings allow them to compress and the exhaust sections 33, 34 under the action of their springs rise to the upper position. The collars 39 of the drive rods 38 release the pivoting levers 27 and, under the influence of the spring 24, the intermediate plate 21 rises together with the punch punches 31, 32) to its initial position. Thus, the position of the upper tool allows you to advance the tape or strip a step, then everything repeats. All these operations take place in three positions of the die (Fig. 2) at the same time (with three-row chess cutting). In this case, the stamp will perform 12 operations in one stroke of the press.

If each central exhaust punch 2 is equipped with a cut-off collar in the size of the product, and in the penultimate exhaust matrix 11 a channel 12 is made, in the lid 17 of the outlet aperture is deformed, and in the matrix holder 8 there is an opening 18 for the blower, then the stamp allows receiving the product with smooth cropped edges. Moreover, at all three positions, the flake will be removed in three different directions along the longitudinal cavity 9 in the matrix holder 8 and discarded by catchers (not shown) into a common container; .. .... ;

The stamp may be provided with an additional bag 41 (pip2) for preparing the embossed bottom in the product before drawing during multiple cutting.

In the stamp, it is possible to carry out a practically complete technological cycle for producing hollow parts from a tape or strip. The stamp can be used on a conventional single-action universal press with automatic feeding of a tape or strip.

Formula 1. A die for cutting and multi-jigging, comprising a top plate, an intermediate plate mounted by means of a pair of columns on the bottom plate and spring-loaded to it. block for cutting and

sleeves in the form of a matrix holder fixed to the bottom plate with die cut and exhaust matrices, fixed in the upper plate of the central retractable 5 punch and placed on the intermediate plate of die cut and exhaust ring sections with expansion rings, a pair of rotary levers fixed at one end to the corresponding column with

0 the ability to interact with the other end with the support rings installed. on an intermediate plate having through holes in the region of said rings, characterized in that, in order to

5 expanding the technological capabilities of the stamp by increasing the utilization of metal and productivity through the use of multiple cutting of a tape or strip

0 at a one-time feeding of them into the die, it is equipped with at least one additional block for cutting and drawing, with an additional pair of columns located symmetrically to the main pair with fixed ones. on them with two additional pivoting levers and additional support rings, as well as fixed on the upper plate and located in a plane passing through the center of the pressure of the stamp, drive rods interacting with their respective collars with a pair of pivoting levers and entering through holes of the intermediate plate, which are made on

5 of its periphery.

2. The stamp according to claim 1, r

the fact that, in order to reduce the magnitude of the stresses in the interaction zone of the rotary

levers with an intermediate plate and drive rods, the latter are made in the form of flat plates with bilateral horizontal parallel collars, and the ends of the rotary levers interacting with them are provided with cylindrical

5 rollers.

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